things change depending on where the economy is and the flow. the other thing is when we talk about immigration in this country, we only talk about illegal immigration basically. there's a whole legal immigration apparatus, and just so you know what the pie chart looks like, there's about 40 million immigrants in this country who are documents. that means they immigrated and become citizens or they have green cards, permanent legal residency. there's about 3.5 million of guest worker visas, about 2 million have student visas, and the rest are undocumented. so this is what the pie chart looks like. we're talking about bringing that red slice into the blue slice. that's a big part of it. but the other place that red slice can go, if we're looking there, thinking about the future, is that guest worker visa or student visa. there's other kinds of ways you can create legal status for people that is not citizenship. and one of the big fights traditionally, particularly between labor and capital over immigration, has been the notion of how much you wan